does anyone have any clue how this ai model was made, willing to pay 5$ for good info

https://www.youtube.com/shorts/v2Uwka157V8

https://www.youtube.com/shorts/_rjtpOv6oQ0

https://www.youtube.com/shorts/v2Uwka157V8

all from the same creator, couldn't find this model anywhere, is it custom made? do you guys have any clue how the video and audio is done?